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<H1 class="no-header">curs_print 3x 2025-02-15 ncurses 6.5 Library calls</H1>
<PRE>
<STRONG><A HREF="curs_print.3x.html">curs_print(3x)</A></STRONG>                   Library calls                  <STRONG><A HREF="curs_print.3x.html">curs_print(3x)</A></STRONG>




</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
       <STRONG>mcprint</STRONG> - write binary data to printer using <EM>terminfo</EM> capabilities


</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
       <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>

       <STRONG>int</STRONG> <STRONG>mcprint(char</STRONG> <STRONG>*</STRONG> <EM>data</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>len</EM><STRONG>);</STRONG>


</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
       <STRONG>mcprint</STRONG>,   an  <EM>ncurses</EM>  extension  to  the  <EM>curses</EM>  library,  uses  the
       terminal's <STRONG>prtr_non</STRONG> (<STRONG>mc5p</STRONG>) or <STRONG>prtr_on</STRONG> (<STRONG>mc5</STRONG>) and  <STRONG>prtr_off</STRONG>  (<STRONG>mc4</STRONG>)  media
       copy  capabilities,  if  defined, to send <EM>len</EM> bytes of the given string
       <EM>data</EM> to a printer attached to the terminal.

       <STRONG>mcprint</STRONG> has no means of flow control to the printer nor of knowing  how
       much buffering it has.  Your application is responsible for keeping the
       rate of writes to the printer below  its  continuous  throughput  rate,
       typically about half of its nominal characters-per-second (cps) rating.
       Dot-matrix printers and 6-page-per-minute laser printers can  typically
       handle  80  cps,  so  a  conservative rule of thumb is to sleep for one
       second after sending an 80-character line.


</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
       On success, <STRONG>mcprint</STRONG> returns  the  number  of  characters  sent  to  the
       printer.

       <STRONG>mcprint</STRONG>  returns  <STRONG>ERR</STRONG>  if the write operation fails for any reason.  In
       that event, <STRONG>errno</STRONG> contains either a value set by <STRONG>write(2)</STRONG>,  or  one  of
       the following.

       <STRONG>ENODEV</STRONG>
            The terminal lacks relevant media copy capabilities.

       <STRONG>ENOMEM</STRONG>
            <EM>ncurses</EM>  could  not allocate sufficient memory to buffer the write
            operation.


</PRE><H2><a name="h2-EXTENSIONS">EXTENSIONS</a></H2><PRE>
       <STRONG>mcprint</STRONG> is an <STRONG><A HREF="ncurses.3x.html">ncurses(3x)</A></STRONG> extension, and is not found in  SVr4  <EM>curses</EM>,
       4.4BSD <EM>curses</EM>, or any other previous <EM>curses</EM> implementation.


</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
       Applications  employing this <EM>ncurses</EM> extension should condition its use
       on the visibility of the <STRONG>NCURSES_VERSION</STRONG> preprocessor macro.


</PRE><H2><a name="h2-HISTORY">HISTORY</a></H2><PRE>
       <EM>ncurses</EM> introduced <EM>mcprint</EM> prior to version 1.9.9g (1996).


</PRE><H2><a name="h2-BUGS">BUGS</a></H2><PRE>
       Padding in the <STRONG>prtr_non</STRONG>  (<STRONG>mc5p</STRONG>),  <STRONG>prtr_on</STRONG>  (<STRONG>mc5</STRONG>),  and  <STRONG>prtr_off</STRONG>  (<STRONG>mc4</STRONG>)
       capabilities is not interpreted.


</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
       <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>



ncurses 6.5                       2025-02-15                    <STRONG><A HREF="curs_print.3x.html">curs_print(3x)</A></STRONG>
</PRE>
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<ul>
<li><a href="#h2-NAME">NAME</a></li>
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
<li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
<li><a href="#h2-EXTENSIONS">EXTENSIONS</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-HISTORY">HISTORY</a></li>
<li><a href="#h2-BUGS">BUGS</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
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